Window-sash booster



Aug. M, 11923.,

H. E. CAMPBELL WINDOW SASH BOOSTER Filed April 13, 1922 Engg "www

Patented Aug. lai, 1923..

onTTo sTa'TTs PATENT QFFHQ.

HARRY E. CAMPBELL, OF NEW YORK, N. Y., ASSIGNOR TO CAMPBELL METAL WINDOW CORPORATION, 0F BALTIMORE, MARYLAND, A CORPORATION OF MARYLAND.

WINDOW-SASH BOOSTER.

Application filed April 13, 1922. Serial No. 552,321.

To al?, 4whom it may concern:

Be it known that l, HARRY E. CAMPBELL, a citizen ofthe United States, residing at New York, in the county of New York and State of New York, have invented a certain new and useful Improvement in Window- Sash Boosters, of which the following is a specication.

The invention is a booster' for initially and directly applying the force exerted by the operato-r to move a sliding window sash away from its seat, against which it may be tightly held. lThis is done through the agency, preferably, and as here shown, of the handle attached to a rail of said sash, whereby the opening of the sash is ordinarily effected. The handle is p-ivoted to the rail so that whenfirst grasped by the operay tor it is swung in the direction of opening movement ,of the sash. This curvilinear movement ofthe handle is then translated by suitable mechanism into longitudinal rectilinear movement of a pusher rod which abuts on the window frame, and so initially and directly applies the whole power exerted by theoperator to force the sash away from its seat, after which the operator uses the handle in the ordinary way to complete the opening of the sash to whatever extent is desired.

in the accompanying drawing- Mv booster is shown applied to the type of nletal window set forth in U. S. Letters Fatent Nos. 1,222,357 and 1,222,358, granted to me April 10, 1917, and Patent No. 1,237 ,295, granted to me Aug. 21, 1917. Fig. 1 is a vertical section through the sill and the lower portion of the` lower sliding sash, sho-wing the position of the parts when the sash is seated on the sill. Fig. 2 is a horizontal section on the line 2, 2 of Fig. 1. Fig. 3 is a vertical section on the line 3, 3 of Fig. 2, showing the position of the parts when the sash is raised from its seat on the sill.

Similar numbers and letters of reference indicate like parts.

My aforesaid patents disclose the type of metal window to which my booster is here shown applied and, therefore, the details of said window are herein omitted. Generally the frame comprises a sill L1 and jambs 5, the said jambs having in their inner walls vertical gaps 6, 7 in which travel lateral plates (not shown) which extend from the side rails of the upper and lower sashes. My booster is here shown attached to the rear side of the bottom rail of the lower sash 8. Said bottom rail is formed of two sheet metal plates 9, 10 secured in contact. rl`he p-late 9 is shouldered at its upper portion so as to form with plate 1() a channel for the reception of the glass pane 11. Plate 10 is shouldered at its lower portion so as to form with plat/e 9 a channel 12 for the reception of a rib 13 on the sill #1, which rib extends transversely across said sill. The sides of rib 13 are preferably inclined more than are the sides of the channel 12, so that when the sash is closed the rib 13 will become wedged in said channel, thus closing the joint and preventing access of drafts of external air through said joint and into the building or room in which the window may be installed.

The construction of my booster now to be explained is such that despite any tightness of the joints between sash and frame, and especially between bottom sash rail and sill rib, as above described, the sash can nevertheless easily be moved from its seat by the operator.

A is a metal lug secured by screw bolts 14: to a liange of plate 10 and by screw bolts 15 to the rear side of the bottom sash rail,

said screws 15 also here serving to attach together the rail plates 9 and 10. Said lug has two forwardly turned arms B. rlhe parallel recesses C or loops below said arms are inclined downwardly and their open front ends are closed by the sash plate 10, against which the lug bears. rlhe rear ends 16 of said recesses are arc-shaped and receive the shaft D, Fig. 1, longitudinal displacement of which is prevented by collars E, Fig. 2, thereon. Fast on, or integral with, shaft D' is a lever arm F which lies between the lug arms B. To the end of arm F is pivoted one end of th'e pusher rod G. Said rod. extends through the lug A, and, as shown in Fig. 1, normally abuts on the upper iat surfa of sill rib 13. A bail-shaped handle H is secured to the ends of shaft D. lt will be obvious that the handle H and arm F unitedly form a swinging lever, of which shaft l) is the pivot.

V7 hen the sash is seated, as shown in Fig. 1, the shaft D lies in the arc-shaped ends 16 of the recesses C. in order to operate the device, the operator simply grasps the handle H and moves the sash by it, exactly as he would do if the handle were rigidly attached to the sash in the ordinary way. As he grasps said handle, he first swings it on its pivot shaft D, and the arm F on said shaft then forces down the pusher rod G upon the sill rib 13. The whole force exerted is then brought into a straight line in the direction of desired motion of the sash and with a leverage represented by the difference in lengths of the lever arm formed by the handle H and that of the lever arm F measured from the center of pivot shaft D. By reason of the inclination of the recesses C, when the handle is moved upwardly, the shaft D is free to move down said incline for ashort distance, as shown in Fig. 3, and thus adjusts its own position with reference to the rectilinear movement of'the pusher rod Gr, so that any binding of the linked parts in the lug is prevented.

While l have herein shown my booster 'applied to a special type of metal window, to which it is especially well adapted, it is to be understood that the invention is not limited to that or any other specilic type, but, on the contrary, may be applied to any window in which there is a sliding sash and fixed seat therefor. LIt will also be obvious that my device may be applied to a horizontally sliding as well as to a vertically sliding sash.

l claim 1. A Window-frame, a sliding sash therein, a lever handle mounted on said sash adapted to be used in the ordinary manner to open or close such sash throughout the full movement thereof, and a member pivoted to said lever handle and normally abutting on said frame; the said parts being so arranged that, the sash being closed, a liljpvementof the handle resulting from the ordinary movement to open the sash will cause said pivoted member to force said sash away fromits seat. 2. A window-frame, a sliding sash therein, a lever having a handle portion and an arm shorter than the handle portion, such lever being pivoted to the sashvin such a way that an upward movement of the handle portion will cause a downward movement of such shorter arm and a member adapted to be moved by such shorter arm to exert pressure against the frame when the handle is raised, so that when the handle is used to open the window in a normal manner, the sash will be forced away from its seat.

3. A window-frame, a sliding sash therein, a lug on the rear side of said sash having shaft bearings, a shaft `in said bearings,

lever arms on said shaft, and alongitudinally movable member pivoted to one of said arms and' extending through said lng and normally abuttingon said frame.

4. A window-frame, a sliding sash therein, a lug on the rear side of said sash having outwardly inclined recesses, a shaft in said recesses, two lever arms of dierent lengths carried by said shaft, a longitudinally movable pusher rod pivoted to the `shorter of said arms and extending through said lug and normally abutting on said frame, A

5. The combination of claim 3, further in- .cluding as the other of saiddever arms a bail-shaped handle connected to opposite ends of said shaft.

ln testimony whereof i have aiiixed my signature in presence of two witnesses.,

HARRY E. CAMPBELL.

Witnesses: f

GERTRUDE T. Pontina, Mar T. MGGARRY.

sin 

